Instead of drawing models of 6 Ones, 2 and a half Tens, and 3 Hundreds you guys will use this tool to create your models.

link to tool:

http://www-k6.thinkcentral.com/content/hsp/math/hspmath/na/common/itools_int_9780547584997_/basetenblocks.html

Examples:

Screenshot (16).png Screenshot (17).png
Screenshot (18).png